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Ramesh A, Sahu PK, Duvvuri S, Subrahmanyam C. MnCo 2O 4 Spinel Nanorods for Highly Sensitive Electrochemical Detection of Nitrite. Inorg Chem 2024; 63:9941-9952. [PMID: 38738811 DOI: 10.1021/acs.inorgchem.4c01012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/14/2024]
Abstract
The rational design of nitrite sensors has attracted significant research interest due to their widespread use and the associated risks of methemoglobinemia and carcinogenicity. The undisclosed nitrite-sensing performance of the spinel cobaltite MnCo2O4 (MCO) prepared by an oxalate-assisted coprecipitation method is reported in this study. Spectroscopy and microscopy investigations revealed the formation of uniform MCO nanorods with a high aspect ratio. The electrocatalytic nitrite oxidation at the MCO-coated glassy carbon electrode (MCO/GCE) indicated the promising performance of the synthesized material for nitrite sensing. MCO/GCE detects nitrite in a concentration range of 5 μM to 3 mM and has a limit of detection of 0.95 μM with a higher sensitivity of 857 μA mM-1 cm-2 in a response time of 4 s. In MCO, the mixed-valence states of Co2+/Co3+ confer a high electrical conductivity, and higher valent redox couples of Mn and Co impart remarkable electrocatalytic activity toward nitrite oxidation. MCO spinel undergoes facile and ultrafast faradaic reactions to mediate nitrite oxidation. Additionally, the mesopores of MCO nanorods facilitate the rapid diffusion of electrolyte and nitrite ions. Employing the electrode in sensing nitrite in milk, lake, and tap water samples further validates its potential application in real-life testing. MCO spinel nanorods showcase promising scope for utilization in the electrochemical sensing of nitrite and inspire further exploration of transition-metal oxide-based mixed-spinel materials.
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Affiliation(s)
- Asha Ramesh
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, Telangana 502285, India
| | - Pravat Kumar Sahu
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, Telangana 502285, India
| | - Suryakala Duvvuri
- Department of Chemistry, GITAM University, Visakhapatnam, Andhra Pradesh 530045, India
| | - Ch Subrahmanyam
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, Telangana 502285, India
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Wang S, Yin H, Qu K, Wang L, Gong J, Zhao S, Wu S. Electrochemical sensors based on platinum-coated MOF-derived nickel-/N-doped carbon nanotubes (Pt/Ni/NCNTs) for sensitive nitrite detection. ANAL SCI 2023:10.1007/s44211-023-00336-2. [PMID: 37040003 DOI: 10.1007/s44211-023-00336-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2023] [Accepted: 03/30/2023] [Indexed: 04/12/2023]
Abstract
As excess nitrite has a serious threat to the human health and environment, constructing novel electrochemical sensors for sensitive nitrite detection is of great importance. In this report, platinum nanoparticles were deposited on nickel-/N-doped carbon nanotubes, which were obtained through a self-catalytically grown process with Ni-MOF as precursors. The as-prepared Pt/Ni/NCNTs were applied as amperometric sensors and presented superior sensing properties for nitrite detection. Benefiting from the synergy of Pt and Ni/NCNTs, Pt/Ni/NCNTs displayed much wider detection ranges (0.5-40 mM and 40-110 mM) for nitrite sensing. The sensitivity is 276.92 μA mM-1 cm-2 and 224.39 μA mM-1 cm-2, respectively. The detection limit is 0.17 μM. The Pt/Ni/NCNTs sensors also showed good feasibility for nitrite sensing in real samples (milk and peach juice) analysis. The active Pt/Ni/NCNTs composites and facile fabrication technique may provide useful strategies to develop other sensitive nitrite sensors.
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Affiliation(s)
- Shuyue Wang
- Wenzhou Institute of Hangzhou Dianzi University, Wenzhou, 325038, China
| | - Haoyong Yin
- Wenzhou Institute of Hangzhou Dianzi University, Wenzhou, 325038, China.
| | - Kaige Qu
- Wenzhou Institute of Hangzhou Dianzi University, Wenzhou, 325038, China
| | - Ling Wang
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou, 310018, China
| | - Jianying Gong
- Wenzhou Institute of Hangzhou Dianzi University, Wenzhou, 325038, China
| | - Shumin Zhao
- Wenzhou Institute of Hangzhou Dianzi University, Wenzhou, 325038, China
| | - Shengji Wu
- College of Engineering, Huzhou University, Huzhou, 313000, China.
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Facile Controlled Synthesis of Pd-ZnO Nanostructures for Nitrite Detection. Molecules 2022; 28:molecules28010099. [PMID: 36615294 PMCID: PMC9822311 DOI: 10.3390/molecules28010099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2022] [Revised: 12/19/2022] [Accepted: 12/20/2022] [Indexed: 12/25/2022] Open
Abstract
The electrocatalytic characteristics of nanostructures are significantly affected by surface structure. The strict regulation of structural characteristics is highly beneficial for the creation of novel nanocatalysts with enhanced electrocatalytic performance. This work reports a nitrite electrochemical sensor based on novel flower-like Pd-ZnO nanostructures. The Pd-ZnO nanocatalysts were synthesized through a simple hydrothermal method, and their morphology and structure were characterized via field-emission scanning electron microscopy (FE-SEM), X-ray photoelectron spectroscopy (XPS), and X-ray diffraction (XRD). Their electrocatalytical performance in the nitrite oxidation reaction was studied via cyclic voltammetry (CV) and the amperometric technique. Compared to pure ZnO and Pd nanoparticles, the Pd-ZnO nanostructures exhibited enhanced electrochemical performance in the nitrite oxidation reaction. In order to investigate the relationships between the structures of Pd-ZnO nanocatalysts and the corresponding electrocatalytic performances, different surface morphologies of Pd-ZnO nanocatalysts were fabricated by altering the solution pH. It was found that the flower-like Pd-ZnO nanostructures possessed larger effective surface areas and faster electron transfer rates, resulting in the highest electrocatalytic performance in the nitrite oxidation reaction. The designed nitrite sensor based on flower-like Pd-ZnO displayed a wide concentration linear range of 1 μM-2350 μM, a low detection limit of 0.2 μM (S/N of 3), and high sensitivity of 151.9 μA mM-1 cm-2. Furthermore, the proposed sensor exhibited perfect selectivity, excellent reproducibility, and long-time stability, as well as good performance in real sample detection.
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Bimetallic metal–organic framework derived Mn, N co-doped Co-Carbon for electrochemical detection of nitrite. JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION 2022. [DOI: 10.1007/s11694-022-01735-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Kokulnathan T, Wang TJ, Ahmed F, Kumar S. Deep Eutectic Solvents-Assisted Synthesis of NiFe-LDH/Mo2C Nanocomposites for Electrochemical Determination of Nitrite. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Wan T, Li K, Kong X, Shen Q, Sun F, Wu H. A new Ag(I) inorganic polymer consisting of Ag(I)-Ag(I) bonds for electrochemical sensing of H 2O 2. J COORD CHEM 2022. [DOI: 10.1080/00958972.2022.2103805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Affiliation(s)
- Tiantian Wan
- School of Chemistry and Chemical Engineering, Lanzhou Jiaotong University, Lanzhou, Gansu, P. R. China
| | - Kaiyi Li
- School of Chemistry and Chemical Engineering, Lanzhou Jiaotong University, Lanzhou, Gansu, P. R. China
| | - Xiaoxia Kong
- School of Chemistry and Chemical Engineering, Lanzhou Jiaotong University, Lanzhou, Gansu, P. R. China
| | - Qinqin Shen
- School of Chemistry and Chemical Engineering, Lanzhou Jiaotong University, Lanzhou, Gansu, P. R. China
| | - Fugang Sun
- School of Chemistry and Chemical Engineering, Lanzhou Jiaotong University, Lanzhou, Gansu, P. R. China
| | - Huilu Wu
- School of Chemistry and Chemical Engineering, Lanzhou Jiaotong University, Lanzhou, Gansu, P. R. China
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Sun F, Dong J, Li R, Jiang Y, Wan T, Wu H. Two binuclear silver(I) complexes containing V‐shaped bis (benzimidazole) ligands: Syntheses, structures and electrochemical sensing towards hydrogen peroxide. Appl Organomet Chem 2022. [DOI: 10.1002/aoc.6614] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Fugang Sun
- School of Chemistry and Chemical Engineering Lanzhou Jiaotong University Lanzhou Gansu People’s Republic of China
| | - Jianping Dong
- School of Chemistry and Chemical Engineering Lanzhou Jiaotong University Lanzhou Gansu People’s Republic of China
| | - Ruixue Li
- School of Chemistry and Chemical Engineering Lanzhou Jiaotong University Lanzhou Gansu People’s Republic of China
| | - Yuxuan Jiang
- School of Chemistry and Chemical Engineering Lanzhou Jiaotong University Lanzhou Gansu People’s Republic of China
| | - Tiantian Wan
- School of Chemistry and Chemical Engineering Lanzhou Jiaotong University Lanzhou Gansu People’s Republic of China
| | - Huilu Wu
- School of Chemistry and Chemical Engineering Lanzhou Jiaotong University Lanzhou Gansu People’s Republic of China
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Liu Q, Liu J, Xu D, Liu C, Lu Z, Xuan D, Wang Z, Ye Y, Wang D, Li S, Wang D, Zheng Z. NiCo2O4 with unique 3D miniature sea urchins as binder-free electrode for high performance asymmetric supercapacitor. J Electroanal Chem (Lausanne) 2022. [DOI: 10.1016/j.jelechem.2022.116068] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Sun F, Dong J, Jiang Y, Li R, Wu H. Bis(benzimidazole) dinuclear silver(I) complex modified carbon paste electrode for electrochemical sensing of hydrogen peroxide. J COORD CHEM 2021. [DOI: 10.1080/00958972.2021.2002307] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Fugang Sun
- School of Chemistry and Chemical Engineering, Lanzhou Jiaotong University, Lanzhou, Gansu, P. R. China
| | - Jianping Dong
- School of Chemistry and Chemical Engineering, Lanzhou Jiaotong University, Lanzhou, Gansu, P. R. China
| | - Yuxuan Jiang
- School of Chemistry and Chemical Engineering, Lanzhou Jiaotong University, Lanzhou, Gansu, P. R. China
| | - Ruixue Li
- School of Chemistry and Chemical Engineering, Lanzhou Jiaotong University, Lanzhou, Gansu, P. R. China
| | - Huilu Wu
- School of Chemistry and Chemical Engineering, Lanzhou Jiaotong University, Lanzhou, Gansu, P. R. China
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